You are mixing apples and oranges. A degree is a unit of measure. How big the unit is depends upon the scale. Fahreheit is a scale of temperature measurement. There are 180 degrees between boiling and freezing temperature of water. Celsius is a scale of temperature measurement. There are 100 degrees between boiling and freezing termperature of water.
Apparently to have a 100 degree scale between freezing and boiling. Fahrenheit has the freezing point at 32 degrees and boiling at 212 degrees. However, in Celsius, the freezing point is 0 degrees and the boiling point is 100 degrees.
212 (Boiling Point) -32 (Freezing Point) ----- 180 degrees
Freezing point is 0 degrees celsius, and boiling point is 100 degrees celsius.
Fahrenheit: freezing: 32 degrees boiling: 212 degrees Celsius: freezing: 0 degrees boiling: 100 degrees
Freezing = 0 Boiling = 100
freezing= 0 boiling= 100
Accounting for water: freezing is 32 degrees and boiling is 212 degrees. The midway point would be 122 degrees Fahrenheit.